As per sthalapurana, the Lord took the four forms as Ambarisha wished to worship the Paradevata in Vyoohavatar roopa and obtain His blessings. It is believed that Dharmaputra worshipped the Perumal at the centre, Arjuna - the one on the west side, Bheema - the one on the left and Nakula and Sahadeva worshipped the Lord on the right side. Ambarisha attained Moksha here.
This place is about 3 kms from Pattambi station on the shoranur - Calicut route (1 km across the Bharatapuzha river).